president obama getting briefed all day friday as the events unfolded on boston. the president saying, now an important chapter of this tragedy has closed. he urged people not to rush to judgment about entire groups of people. >> tonight, our nation is in debt to the people of boston and tote people of massachusetts. after a vicious attack on their city, bostonnians responded with resolve and determination. they did their part as citizens and partners in this investigation. boston police and state police and local police across the commonwealth of massachusetts responded with professionalism and bravery over five long days. and tonight, because of their determined efforts, we have closed an important chapter in this tragedy. whatever hateful agenda drove these men to such heinous acts will not, cannot prevail. whatever they thought they could ultimately achieve. they have already failed. they failed because the people of boston refused to be intimidated. they failed because as americans, we refuse to be terrorized. they failed because we will not waiver from the c